Ya his quick call up was due to Mathers and Kelenic's pressure to be up. He wasn't ready, but maybe this shows him that he doesn't know everything about being ready that he thinks he did.Well you just did @wazzu31's job for him lol.
I actually didn't realize this, but Kelenic has only played 27 combined games between AA and AAA in his career. Even Mike Trout played 91 games in AA. Tbh I'm surprised nobody brought this issue up (or I missed it, which I probably did) before Kelenic's call up.
I think his pitch recognition will improve as he gains experience. I mean shit even a journeyman has better stuff than a majority of the pitchers that Kelenic has faced thus far in his pro career.